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 | The ornamental design for a differential pressure indicator, as shown and described. | |||||||||||||||||
FIG. 1 is a top, front and right side perspective view of a differential pressure indicator showing our new design;
FIG. 2 is a bottom, rear and left side perspective view;
FIG. 3 is a top plan view;
FIG. 4 is a right side elevational view, the left side elevational view being identical;
FIG. 5 is a typical end elevational view; and,
FIG. 6 is a bottom plan view thereof.
Tosi, Robert B., Peletis, George N., MacPherson, Ronald E.
| Patent | Priority | Assignee | Title | 
| D346124, | Nov 18 1992 | SENSORY MANAGEMENT SERVICES, LLC | Breast compliance measuring device | 
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| 3568625, | |||
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc | 
| Apr 11 1991 | PELETIS, GEORGE N | WILKERSON CORPORATION A CORP OF COLORADO | ASSIGNMENT OF ASSIGNORS INTEREST | 005730/ | 0768 | |
| Apr 11 1991 | TOSI, ROBERT B | WILKERSON CORPORATION A CORP OF COLORADO | ASSIGNMENT OF ASSIGNORS INTEREST | 005730/ | 0768 | |
| Apr 11 1991 | MACPHERSON, RONALD E | WILKERSON CORPORATION A CORP OF COLORADO | ASSIGNMENT OF ASSIGNORS INTEREST | 005730/ | 0768 | |
| May 30 1991 | Wilkerson Corporation | (assignment on the face of the patent) | / | |||
| Jun 25 2001 | Wilkerson Corporation | CKD-CREATEC CORPORATION | MERGER SEE DOCUMENT FOR DETAILS | 012607/ | 0078 | |
| Jun 30 2001 | CKD-CREATEC CORPORATION | Parker-Hannifin Corporation | MERGER SEE DOCUMENT FOR DETAILS | 012598/ | 0990 | |
| May 08 2002 | Parker-Hannifin Corporation | PARKER HANNIFIN CUSTOMER SUPPORT INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 012928/ | 0198 | |
| Jun 30 2003 | PARKER HANNIFIN CUSTOMER SUPPORT INC | Parker Intangibles LLC | MERGER SEE DOCUMENT FOR DETAILS | 015215/ | 0522 | 
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